Photoshop CS6 image disappears while cropping or transforming. Works again on restart

A recent problem with Photoshop CS6
I am running Windows 7 64 bit
Graphics Card AMD Radeon 7800 series AMD Catalyst 12.6
When editing an image and using the free transform or crop tool, the image is invisible.
I still see it in the navigator box, but not he work space.
click another tool and it re-appears.
I can shut down and re-start CS6 and work along for five minutes, or an hour before encountering the same problem.
It's an "all stop" in my work flow.
If this issue is a graphics card related behavior, does Adobe recommend a top performing graphics card? I will immediately purchase whatever will work BEST
thank you...